Serum and urinary essential trace elements in association with major depressive disorders: a case-control study.

Introduction: The etiology and pathophysiology of major depressive disorders (MDDs) remain unclear. Increasing evidence has demonstrated that essential trace elements (ETEs), such as iodine (I), zinc (Zn), copper (Cu), selenium (Se), cobalt (Co), and molybdenum (Mo), play vital roles in MDDs.

Methods: In total, 72 patients with MDD and 75 healthy controls (HCs) in the Zhumadian Second People's Hospital, Henan Province, China were recruited in our study.

Bacterial Translocation Associates With Aggression in Schizophrenia Inpatients.

Accumulating evidence indicates that inflammation abnormalities may contribute to aggression behaviors in psychotic patients, however, the possible sources of inflammation remain elusive. We aimed to evaluate the associations among aggression, inflammation, and bacterial translocation (BT) in aggression-affected schizophrenia (ScZ) inpatients with 2 weeks of antipsychotics discontinuation. Serum specimens collected from 112 aggression and 112 non-aggression individuals with ScZ and 56 healthy adults were used for quantifications of inflammation- or BT-related biomarkers.

Optically dark excitonic states mediated exciton and biexciton valley dynamics in monolayer WSe.

We present a theory to address the photoluminescence (PL) intensity and valley polarization (VP) dynamics in monolayer WSe, under the impact of excitonic dark states of both excitons and biexcitons. We find that the PL intensity of all excitonic channels including intravalley exciton (X), intravalley biexciton (XX) and intervalley biexciton (XX[Formula: see text]) in particular for the XX PL is enhanced by laser excitation fluence. In addition, our results indicate the anomalous temperature dependence of PL, i.

Tunable spin and valley dependent magneto-optical absorption in molybdenum disulfide quantum dots.

Photonic quantum computer, quantum communication, quantum metrology and quantum optical technologies rely on the single-photon source (SPS). However, the SPS with valley-polarization remains elusive and the tunability of magneto-optical transition frequency and emission/absorption intensity is restricted, in spite of being highly in demand for valleytronic applications. Here we report a new class of SPSs based on carriers spatially localized in two-dimensional monolayer transition metal dichalcogenide quantum dots (QDs).

Persistent Skyrmion Lattice of Noninteracting Electrons with Spin-Orbit Coupling.

A persistent spin helix (PSH) is a robust helical spin-density pattern arising in disordered 2D electron gases with Rashba α and Dresselhaus β spin-orbit (SO) tuned couplings, i.e., α=±β.

Robust effective Zeeman energy in monolayer MoS2 quantum dots.

We report a theoretical investigation on the energy spectrum and the effective Zeeman energy (EZE) in monolayer MoS2 circular quantum dots, subjected to an out-of-plane magnetic field. Interestingly, we observe the emergence of energy-locked modes, depending on the competition between the dot confinement and the applied magnetic field, for either the highest K-valley valence band or the lowest [Formula: see text]-valley conduction band. Moreover, an unusual dot-size-independent EZE behavior of the highest valence and the lowest conduction bands is found.

[Reason analysis of reoperation after failed laparoscopic surgery for acute abdomen].

Objective: To analyze the reasons for reoperation after failed laparoscopic surgery for acute abdomen.

Methods: A retrospective study was performed to review the clinical data of 17 patients who required reoperation after laparoscopic surgery from May 2006 to March 2011.

Results: There were 11 males and 6 females with 16-68 years old.